In what respect is the electronic configuration of hydrogen and halogens similar?
Hydrogen and halogens have one electron in their outermost shell
Hydrogen and halogens have one electron less than noble gas configuration
Hydrogen and halogens can lose one electron
Hydrogen and halogens show noble gas configuration
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Correct option is B)
Hydrogen has one electron in its only shell. Hence, it needs one more electron to attain a stable duplet electronic configuration. On the other hand, halogens have seven electrons in their valence shell. They also need one more electron to attain a stable octet configuration. Therefore, they are similar in the way that they have one electron less than noble gas configuration.
Both have an electron less than the nearest noble gas configuration.